188 
Mr. O. Salvin's Five Months’ Birds’-nesting 
full feather, the same inequality in size subsisting between the 
two. They w T ere, doubtless, male and female. Unfortunately 
the male died during the journey between Marseilles and Paris, 
and we had no means at hand for preserving it. The female is 
now at Catton. From this female it would appear that all 
Mr. Gurney's birds were females, as all corresponded in size; and 
I am also led to the conclusion that the two skins I possess, 
from one of which the accompanying figure is taken, are also 
females, as Mr. Gurney kindly compared them with his living 
examples, and in point of size they presented no appreciable 
difference. I mention this, as my two skins are marked male and 
female ; but I was evidently mistaken in one or other, as both 
are as nearly as possible the same size, or, if anything, the one 
marked male is the larger of the two. Prom the stomach of 
both these specimens I took examples of a large species of Ento- 
zoon , but unfortunately did not preserve them. I am indebted 
to Mr. Alfred Newton for the quotations which I have given 
above respecting this bird, and also for the probable references 
which I subjoin 
Accipiter falco tunetanus, Briss. Orn. i. p. 343 (1763). 
Palco barbarus, Linn. Syst. Nat. p. 125 (1766).— Gmel. 
Syst. Nat. p. 272 (1789).— Lath. Ind. Orn. p. 33 
(1790); Syn. i. p. 72 (1781); Gen. Hist. B. i. p. 82 B 
(1829). 
Palco alphanet, Schl. Tr. sur la Pauconnerie. 
Palco punicus, Levaill. jun ., Exploration Scientifique 
d'Algerie. 
Gennaja barbarus, Bonap. Cat. Ois. d'Eur. et de l’Alg. 
(1856). 
Barbary Paulcon, Gentl. Beer. p. 208 (1677). 
Barbary Palcon, Albin, Nat. Hist. B. iii. pi. 2 (1738).—- 
F. H. Salvin and Brodrick, Falconry, p. 101, pi. 17. 
(Av. hornot.) 
The Barbary Palcon is well known to the Arabs as u Bournee.” 
The measurements of the eggs referred to above are: 
(1.) Axis . . 1 in. 11 lines. Diameter. . 1 in. 7'5 lines. 
(2.) „ . . 1 „ 10-5 „ „ • 1 „ 6 „ 
(3.) „ . . 2 „ 0-5 „ „ . . 1 „ 675 „ 
